212302530 has 96 divisors (see below), whose sum is σ = 607134528. Its totient is φ = 51043200.

The previous prime is 212302513. The next prime is 212302543. The reversal of 212302530 is 35203212.

212302530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128872 + ... + 130508.

It is an arithmetic number, because the mean of its divisors is an integer number (6324318).

Almost surely, 2^212302530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212302530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303567264).

212302530 is an abundant number, since it is smaller than the sum of its proper divisors (394831998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212302530 is a wasteful number, since it uses less digits than its factorization.

212302530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792 (or 1789 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 212302530 is about 14570.6049977343. The cubic root of 212302530 is about 596.5566938725.

Adding to 212302530 its reverse (35203212), we get a palindrome (247505742).

The spelling of 212302530 in words is "two hundred twelve million, three hundred two thousand, five hundred thirty".